From 1945 to 2000, or thereabouts, far more people than ever before in human history were expected to read, understand, appreciate, and even enjoy books.
In 2005, Wendy Griswold, Terry McDonnell, and Nathan Wright, sociologists from Northwestern University, published a paper concluding that while there was a period in which extraordinarily many Americans practiced long-form reading, whether they liked it or not, that period was indeed extraordinary and not sustainable in the long run. "We are now seeing such reading return to its former social base: a self-perpetuating minority that we shall call the reading class."